Clamping and fixing device capable of adjusting templates with different elevation plate surfaces

Abstract

The utility model discloses a clamping and fixing device capable of adjusting formworks with different elevation plate surfaces. The clamping and fixing device comprises a descending plate bottom formwork and a descending plate bottom formwork supporting cement cushion block, a supporting nut is prefabricated on the cement cushion block, the supporting nut is in threaded connection with a supporting bolt, and a square column is arranged at the upper end of the supporting bolt. The middle of the supporting bolt is in threaded connection with a height adjusting nut, the side face of the height adjusting nut is fixedly connected with a horizontal supporting bolt, the end of the horizontal supporting bolt is in threaded connection with a clamping nut, and the side face of the clamping nut is fixedly connected with a clamping rod. A clamping device is arranged between the upper portion of the supporting bolt and the upper portion of the clamping rod and comprises a clamping sleeve arranged on the square column in a sleeving mode and a clamping groove formed in the upper end of the clamping rod, the bottom face of the square column is flush with the bottom face of the clamping groove in the horizontal direction, the side face of the clamping sleeve is fixedly connected with a clamping bolt, and the clamping bolt can be clamped in the clamping groove in an up-down sliding mode. And the clamping bolt on the outer side of the clamping groove is in threaded connection with a clamping nut. Loosening of the plate descending side formwork in the construction process is prevented, and the plate descending quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, and particularly relates to a clamping device for adjusting formboards of different elevation slabs. Background Art

[0002] In architectural design, in order to make the floor slabs of water-wet rooms such as washrooms and bathrooms lower than those of other floor slabs on the same floor, slab lowering is required. Due to the design of slab lowering, the side formboards of the beams around the lowered slab need to be suspended formboards. However, due to the special waterproof requirements of these rooms and the small height of the suspended formboards, it is not easy to reinforce the formboards around the lowered slab. Often during the process of pouring concrete, formboard offset occurs, resulting in changes in the cross-sectional dimensions of the beams around the lowered slab, or causing the concrete pouring of the side formboards of the beams around the lowered slab to be not dense. When removing the formboards, it may cause the concrete to chip off, bringing potential hazards to the structure of the building and subsequent waterproof construction. The quality of the slab lowering construction will affect both the subsequent secondary structure construction and the decoration project.

[0003] The authorized announcement number CN204920204U discloses a lowered slab suspended formboard support frame, which includes a vertically parallel support vertical fixed section and a lowered slab height section. The top ends of the support vertical fixed section and the lowered slab height section are provided with a support horizontal connection section. The lower end of the lowered slab height section is provided with a formboard horizontal support section. The formboard horizontal support section is perpendicular to the vertical plane formed by the lowered slab height section and the support vertical fixed section. The other end of the formboard horizontal support section is bent downward to form a floor slab thickness section. The floor slab thickness section is parallel to the vertical plane formed by the lowered slab height section and the support vertical fixed section. The lower end of the floor slab thickness section is provided with a support horizontal support section. The dimensions of the utility model need to be processed and manufactured according to the dimensions of the beams around the lowered slab, the height of the lowered slab, and the dimensions of the suspended formboard. When removing the suspended formboard, first cut off the exposed steel bars of this support frame, and then remove the side formboards of the lowered slab.

[0004] The authorized announcement number: CN211007644U discloses a suspended formboard support frame. The upper end of the support frame body is provided with a suspension part, and the suspension part is used as the component for connecting the support frame body with the beam around the lowered slab. The lower end of the support frame body is provided with a support part, and the support part is fixedly connected with the suspension part through a connecting rib. The support part is provided with a horizontal section, and the horizontal section is used to support and fix the wooden square. The support part includes a first support rib, a second support rib, and a third support rib. The top ends of the first support rib, the second support rib, and the third support rib are fixedly connected, and the first support rib, the second support rib, and the third support rib are distributed in a triangle. Fixed parts are provided at the bottom ends of the first support rib, the second support rib, and the third support rib, and the fixed parts are used as the components for connecting the support frame body with the lowered slab formboard. The support part is made of steel bars and is directly poured into the concrete.

[0005] Both of them have the problems that the processing of the support frame is inconvenient, the fixing of the side formwork of the dropped slab is inconvenient, and the production efficiency is low; it is necessary to process and manufacture according to the dimensions of the beams around the dropped slab, the height of the dropped slab and the size of the suspended formwork, the thickness of the dropped slab cannot be adjusted, and the adaptability is poor; most or all of the support frames remain in the concrete after the side formwork of the dropped slab is removed, the support frames cannot be disassembled and reused, and the production cost is high; during the construction process, the side formwork of the dropped slab is not firmly fixed and is prone to looseness and offset, resulting in changes in the cross-sectional dimensions of the beams around the dropped slab and affecting the quality of the dropped slab. Summary of the Invention

[0006] The purpose of the present utility model is to provide a clamping device for adjustable formwork of different elevation slabs in view of the above-mentioned deficiencies of the prior art.

[0007] The technical solution of the present utility model is realized as follows:

[0008] A clamping device for adjustable formwork of different elevation slabs includes a bottom formwork of the dropped slab, side formwork of the dropped slab, and steel bars of the beams around the dropped slab. The bottom formwork of the dropped slab is supported and connected to cement pads. A support nut is prefabricated at the center position of the upper surface of the cement pad. The support nut is coated with grease inside. The support nut is threadedly connected to a support bolt. A square column is provided at the upper end of the support bolt. A height adjustment nut is threadedly connected to the middle of the support bolt. An isolation tube is sleeved on the support bolt between the lower bottom surface of the height adjustment nut and the upper end surface of the support nut. A horizontal support bolt is fixedly connected to the side surface of the height adjustment nut. The upper end surface of the height adjustment nut is flush with the upper line of the outer circle of the horizontal support bolt. The end of the horizontal support bolt is threadedly connected to a clamping nut. A clamping rod is fixedly connected to the side surface of the clamping nut. The outer surfaces of the isolation tube, height adjustment nut, horizontal support bolt, clamping nut, and clamping rod are wrapped with an isolation film. The upper part of the support bolt and the inner side of the clamping rod are clamped and connected to the two side surfaces of the side formwork of the dropped slab. The horizontal support bolt is supported and connected to the bottom surface of the side formwork of the dropped slab. The outer side of the clamping rod abuts against the steel bars of the beams around the dropped slab. A clamping device is provided between the upper part of the support bolt and the upper part of the clamping rod. The clamping device includes a clamping sleeve sleeved on the square column and a clamping groove provided at the upper end of the clamping rod. The bottom surface of the square column is flush with the bottom surface of the clamping groove in the horizontal direction. A clamping bolt is fixedly connected to the side surface of the clamping sleeve. The clamping bolt can slide up and down in the clamping groove. A clamping nut is threadedly connected to the clamping bolt outside the clamping groove.

[0009] The cross-sectional shape of the clamping rod includes a square or a rectangle.

[0010] The present utility model has the following advantages:

[0011] The adjustable and reusable formwork support for lowered slab is fabricated by combining nut, bolt welding and threaded connection, which is convenient for processing. The side formwork of the lowered slab is clamped between the clamping rod and the support bolt, facilitating the fixation of the side formwork of the lowered slab and featuring high production efficiency. The distance between the clamping rod and the support bolt is adjustable, allowing for the selection of various side formworks of the lowered slab. The height adjustment nut can adjust the distance from the bottom surface of the side formwork of the lowered slab to the bottom formwork of the lowered slab, meeting the requirements of different lowered slab thicknesses and showing strong adaptability. The isolation film wrapped around the outer surfaces of the isolation tube, height adjustment nut, horizontal support bolt, clamping nut and clamping rod facilitates the removal of the horizontal support bolt and the clamping rod. After removing the side formwork of the lowered slab, the support bolt of the support frame is withdrawn from the support nut and height adjustment nut, the support nut remains in the lowered slab with the cement cushion block, the isolation tube is taken out from the lowered slab, the horizontal support bolt is taken out from the upper surface of the lowered slab, and the clamping rod is taken out from the side surface of the floor slab, and all can be reused next time, resulting in low production costs. The clamping device arranged between the upper part of the support bolt and the upper part of the clamping rod further clamps the side formwork of the lowered slab between the clamping rod and the support bolt, preventing the side formwork of the lowered slab from loosening and shifting during construction, which may cause changes in the cross-sectional dimensions of the beams around the lowered slab, and further improving the quality of the lowered slab.

[0012] The lubricating grease applied inside the support nut prevents the support nut and the support bolt from solidifying together after concrete pouring, facilitating the removal of the support bolt.

[0013] The design of the cross-sectional shape of the clamping rod as circular, square or rectangular is more convenient for the removal of the clamping rod from the side surface of the floor slab. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 is a schematic structural diagram of the clamping device for formworks of slabs with different elevations.

[0015] In the figure: 1-bottom formwork of the lowered slab, 3-support nut, 4-isolation film, 5-support bolt, 5.1-square column, 5.2-bottom surface of the square column, 6-side formwork of the lowered slab, 7-clamping rod, 7.1-card slot, 7.2-bottom surface of the card slot, 8-steel bars of the beams around the lowered slab, 9-horizontal plane of the house, 10-clamping nut, 11-horizontal support bolt, 12-height adjustment nut, 13-lowered slab, 13.1-horizontal plane of the lowered slab, 14-isolation tube, 15-cement cushion block, H1-height by which the lowered slab is lowered, H2-thickness of the lowered slab, 16-clamping sleeve, 17-clamping bolt, 18-clamping nut. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0016] The present utility model will be further described below with reference to the accompanying drawings.

[0017] As attached Figure 1As shown, a clamping device for adjustable formwork of slabs at different elevations includes a lowered slab bottom formwork 1, a lowered slab side formwork 6, and steel bars 8 of the lowered slab peripheral beam. The lowered slab bottom formwork 1 is supported and connected to cement pads 15. A support nut 3 is prefabricated at the center of the upper surface of the cement pad 15. The support nut 3 is coated with grease inside. The support nut 3 is threadedly connected to a support bolt 5. A square column 5.1 is provided at the upper end of the support bolt 5. A height adjustment nut 12 is threadedly connected to the middle of the support bolt 5. An isolation tube 14 is sleeved on the support bolt 5 between the lower bottom surface of the height adjustment nut 12 and the upper end surface of the support nut 3. A horizontal support bolt 11 is fixedly connected to the side of the height adjustment nut 12. The upper end surface of the height adjustment nut 12 is flush with the upper line of the outer circle of the horizontal support bolt 11. A clamping nut 10 is threadedly connected to the end of the horizontal support bolt 11. A clamping rod 7 is fixedly connected to the side of the clamping nut 10. An isolation film 4 is wrapped around the outer surfaces of the isolation tube 14, the height adjustment nut 12, the horizontal support bolt 11, the clamping nut 10, and the clamping rod 7. The upper part of the support bolt 5 and the inner side of the clamping rod 7 are clamped and connected to both side surfaces of the lowered slab side formwork 6. The horizontal support bolt 11 is supported and connected to the bottom surface of the lowered slab side formwork 6. The outer side of the clamping rod 7 abuts against the steel bars 8 of the lowered slab peripheral beam. The production of this adjustable and reusable lowered slab suspended formwork support frame adopts a combination of nut, bolt welding, and threaded connection methods, which is convenient for processing. The lowered slab side formwork is clamped between the clamping rod and the support bolt, which is convenient for fixing the lowered slab side formwork and has high production efficiency. The distance between the clamping rod and the support bolt is adjustable, and multiple lowered slab side formworks can be selected. The height adjustment nut adjusts the distance from the bottom surface of the lowered slab side formwork to the lowered slab bottom formwork, which can meet the requirements of different lowered slab thicknesses and has strong adaptability. The isolation film wrapped around the outer surfaces of the support nut, the isolation tube, the height adjustment nut, the horizontal support bolt, the clamping nut, and the clamping rod facilitates the removal of the horizontal support bolt and the clamping rod. After removing the lowered slab side formwork, the support bolt of the support frame is withdrawn from the support nut and the height adjustment nut, the support nut stays in the lowered slab with the cement pad, the isolation tube is taken out of the lowered slab, the horizontal support bolt is taken out from the upper surface of the lowered slab, and the clamping rod is taken out from the side surface of the floor slab and can be reused next time, with low production cost. A clamping device is provided between the upper part of the support bolt and the upper part of the clamping rod. The clamping device includes a clamping sleeve 16 sleeved on the square column 5.1 and a clamping groove 7.1 provided at the upper end of the clamping rod. The bottom surface 5.2 of the square column is flush with the bottom surface 7.2 of the clamping groove in the horizontal direction. A clamping bolt 17 is fixedly connected to the side of the clamping sleeve 16. The clamping bolt 17 can slide up and down in the clamping groove 7.1. A clamping nut 18 is threadedly connected to the clamping bolt 17 outside the clamping groove 7.1. The clamping device provided between the upper part of the support bolt and the upper part of the clamping rod further clamps the lowered slab side formwork between the clamping rod and the support bolt, preventing the change in the cross-sectional dimensions of the beams around the lowered slab caused by the loosening and offset of the lowered slab side formwork during construction and further improving the quality of the lowered slab.

[0018] The shape of the cross-section of the clamping rod 7 includes a square or a rectangle. The square or rectangular design of the shape of the cross-section of the clamping rod is more convenient for taking out the clamping rod from the side surface of the floor slab.

[0019] The usage method of the present utility model is as follows:

[0020] 1. Connect the support bolt and the support nut: Place the cement cushion block 15 on the bottom formwork 1 of the dropped slab, and connect the lower end of the support bolt 5 with the support nut 3;

[0021] 2. Adjust the height: According to the design requirements of the dropped slab, sleeved the isolation pipe 14 on the support bolt 5, and rotate the height adjustment nut 12 so that the distance from the upper surface of the height adjustment nut 12 to the upper surface of the bottom formwork 1 of the dropped slab is the same as the thickness H2 of the dropped slab;

[0022] 3. Adjust the width: Select the side formwork of the dropped slab with the same thickness as the reduced height H1 of the dropped slab, and rotate the clamping nut 10 according to the width of the side formwork 1 of the dropped slab so that the distance between the clamping rod 7 and the support bolt 5 is the same as the width of the side formwork of the dropped slab;

[0023] 4. Wrap the isolation film: Wrap the isolation film 4 on the outer surfaces of the isolation pipe 14, the height adjustment nut 12, the horizontal support bolt 11, the clamping nut 10, and below the bottom surface 7.2 of the clamping groove of the clamping rod 7;

[0024] 5. Clamp the formwork: Clamp the side formwork 6 of the dropped slab between the clamping rod 7 and the support bolt 5, the horizontal support bolt 11 is supported and connected with the bottom surface of the side formwork 6 of the dropped slab, and the outer side of the clamping rod 7 abuts against the peripheral beam steel bars 8 of the dropped slab;

[0025] 5. Clamp and fix: Sleeve the clamping sleeve 16 on the square column 5.1, the clamping bolt 17 is stuck in the clamping groove 7.1, and tighten the clamping nut 18 so that the side formwork 1 of the dropped slab between the clamping rod 7 and the support bolt 5 is further clamped and fixed.

[0026] 6. Pour concrete: Pour concrete, the horizontal plane 9 of the house is flush with the upper end surface of the side formwork 6 of the dropped slab, and the horizontal plane 13.1 of the dropped slab is flush with the lower end surface of the side formwork 6 of the dropped slab;

[0027] 7. Dismantle the formwork and reuse: After the concrete strength reaches the requirements, loosen the tightening clamping nut 18, take out the clamping sleeve 16 from the square column 5.1 and the clamping bolt 17 from the clamping groove 7.1 upwards, use a wrench to hold the square column 5.1 and rotate, the support bolt 5 withdraws from the support nut 3 and the height adjustment nut 12 for reuse next time; the isolation pipe 14 is taken out from the dropped slab 13 for reuse next time; remove the side formwork 6 of the dropped slab; take out the horizontal support bolt 11 from the upper surface of the dropped slab 13 for reuse next time, take out the clamping rod 7 from the side surface of the floor slab for reuse next time; the support nut 3 remains in the dropped slab 13 together with the cement cushion block 15.

[0028] The above specific implementation manners in the form of embodiments have described the present utility model in detail. However, it should not be understood that the scope of the above subject matter of the present utility model is limited to the above specific implementation manners. All technologies implemented based on the above content of the present utility model belong to the scope of the present utility model.

Claims

1. A clamping device for adjustable plate templates of different elevations, comprising a lower plate template, a lower plate side template, and a lower plate peripheral beam reinforcement. The lower plate template supports and connects a cement pad. A support nut is prefabricated at the center of the upper surface of the cement pad, and grease is applied inside the support nut. The support nut is threadedly connected to the support bolt, and a square column is arranged on the upper end of the support bolt; the middle part of the support bolt is threadedly connected to the height adjustment nut, and an isolation tube is mounted on the support bolt between the lower bottom surface of the height adjustment nut and the upper end surface of the support nut; the side of the height adjustment nut is fixedly connected to the horizontal support bolt, and the upper end surface of the height adjustment nut is flush with the upper line of the outer circle of the horizontal support bolt, the end of the horizontal support bolt is threadedly connected to the clamping nut, and the side of the clamping nut is fixedly connected to the clamping rod; the outer surfaces of the isolation tube, height adjustment nut, horizontal support bolt, clamping nut, and clamping rod are wrapped with an isolation film; the upper part of the support bolt and the inner side of the clamping rod are clamped and connected to the two side surfaces of the lower plate side template; the horizontal support bolt is supported and connected to the bottom surface of the lower plate side template; the outer side of the clamping rod is close to the peripheral beam reinforcement of the lower plate; it is characterized in that: A clamping device is arranged between the upper part of the supporting bolt and the upper part of the clamping rod, and the clamping device comprises a clamping sleeve mounted on the square column and a slot arranged on the upper end of the clamping rod. The bottom surface of the square column is flush with the bottom surface of the slot in the horizontal direction. The side surface of the clamping sleeve is fixedly connected to the clamping bolt, and the clamping bolt can be slid up and down in the slot. The clamping nut is threadedly connected to the clamping bolt outside the slot.

2. The clamping device of the adjustable plate template with different elevations according to claim 1 is characterized in that: The cross-section of the clamping rod may be in the shape of a square or a rectangle.

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